@ARTICLE {CoursolleGiassonMargolisEtAl2012,
AUTHOR = {Coursolle, C. and Giasson, M.-A. and Margolis, H.A. and Bernier,
P.Y.},
TITLE = {Moving towards carbon neutrality: CO2 exchange of a black spruce
forest ecosystem during the first 10 years of recovery after harvest},
JOURNAL = {Canadian Journal of Forest Research},
YEAR = {2012},
VOLUME = {42},
PAGES = {1908-1918},
NUMBER = {11},
ABSTRACT = {Disturbances control the landscape-level C dynamics of boreal forests,
but post-disturbance C dynamics are usually poorly quantified. In
the current study, we use 10 years of CO2 flux measurements at a
boreal black spruce (Picea mariana (Mill.) B.S.P.) cutover in eastern
Canada to estimate time to C neutrality, quantify the relative role
of respiration versus photosynthesis during recovery, and determine
the agreement between cumulated CO2 fluxes and plot-level changes
in C content. The site was a net source of 139 g C·m–2·year–1 2 years
post-harvest, dropped further to a source of 173 g C·m–2·year–1 4
years post-harvest, following a scarification treatment, and was
nearly C neutral 10 years post-harvest. Gross ecosystem productivity
(GEP) increased by 50 g C·m–2·year–1 post-scarification, while ecosystem
respiration (ER) increased by only 23 g C·m–2·year–1. The resulting
net rate of increase of 27 g C·m–2·year–1 in net ecosystem productivity
was driven by changes in increasing leaf area. In fact, vegetation
regrowth had a much greater impact on annual fluxes than did interannual
variability in climate. Biometric-based measurements of total C losses
after harvest were in relatively good agreement with eddy-covariance-based
estimates 8 years after the harvest.},
DOI = {10.1139/x2012-133},
EPRINT = {http://www.nrcresearchpress.com/doi/pdf/10.1139/x2012-133},
OWNER = {amriv2},
TIMESTAMP = {2013.01.07},
URL = {http://www.nrcresearchpress.com/doi/abs/10.1139/x2012-133},
}